Two environmental organizations filed a lawsuit in Montana District Court challenging the supplemental final environmental assessment (Final EA) issued by the Montana Department of Environmental Quality (DEQ) related to the Yellowstone County Generating Station, a 175-megawatt gas-fired power plant. The complaint alleged that the Final EA failed to adequately evaluate the environmental impacts of the plant’s greenhouse gas emissions, as required by the Montana Supreme Court in an <a href="https://www.climatecasechart.com/collections/montana-environmental-information-center-v-montana-department-of-environmental-quality_9322f4">earlier case</a>. The plaintiffs asked the court to set aside the Final EA and to order DEQ to complete an analysis of the power plant’s direct, secondary, and cumulative impacts, in addition to no-action alternatives and potential mitigation measures in compliance with the Montana Environmental Policy Act, the Montana Supreme Court’s earlier decision, and the Montana Constitution’s environmental rights.

Challenge to supplemental environmental review for the Yellowstone County Generating Station for failing to adequately evaluate the environmental impacts of the plant's greenhouse gas emissions.

Montana Environmental Information Center v. Montana Department of Environmental Quality

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Environmental Groups Challenged Montana Agency’s Second Attempt at Environmental Review for Power Plant’s Air Permit

Filed

United States of America

Montana

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An aim to achieve a quantifiable outcome within a given time-frame, set by an institution such as a national government.

Policy instruments are techniques or tools used by governing authorities to promote certain policies in order to achieve predetermined goals. Put simply, instruments are how a government tries to achieve its goals, with this taxonomy being focused on national policy instruments.

Risk is the potential for adverse consequences resulting from the dynamic interplay between (climate-related) hazards, exposure, and vulnerability of affected human or ecological systems.

Groups  of people who are adversely affected by climate change or the response to it

A set of principles, processes, and practices that build economic and political power to shift from an extractive economy to a regenerative economy.

Justice is the ethical and political framework that addresses fairness, including issues of responsibility, rights, and structural inequity.

Renewable energy means all forms of energy produced from renewable sources in a sustainable manner.

Fossil fuel is a generic term for non-renewable energy sources such as coal, fossil gas, and oil (including crude oil, and petroleum products), that can be used for electricity and heat generation. Fossil fuels are hydrocarbons formed from pressurised and heated organic material buried over millions of years.

Molecules in the atmosphere that play a key role in the greenhouse effect by trapping heat radiating from Earth’s surface.

Area of the economy in which actors engage in identical or related activities.

In human systems, the process of adjustment to actual or expected climate change and its effects, in order to moderate harm, increase resilience or exploit beneficial opportunities. In natural systems, the process of adjustment to actual climate change and its effects; human intervention may facilitate adjustment to expected climate change and its effects.

The management and allocation of funds, assets and investments to meet various objectives

People who are less able to respond to the effects of climate change due to having limited financial or physical assets

A tax advantage is a fiscal incentive where the government reduces or exempts selected activities, goods or actors from taxes.

A loan is a policy instrument where funds are provided to a borrower with the expectation of repaying the principal plus interest.

Direct investments by the governments using public funds. This can be to support climate initiatives or integrate climate into other projects.

Financial support to help individuals manage the effects of unexpected events, securing their livelihoods and increasing the resilience of people and businesses to the changing climate. It’s especially vital in developing regions where everyday risks, climate-related weather extremes, or crop failures can push people into poverty. Without insurance, people may have to resort to selling assets or cutting consumption to cope with losses.

Tradable permits are market-based tools that grant permission for specific activities, frequently used to regulate emissions. These permits can be issued within a trading system to manage environmental impacts.

Codes and standards are regulatory instruments that specify minimum standards to protect health and safety. This ranges from performance standards, which prescribe outcomes while allowing flexibility to achieve compliance, to the more prescriptive approach of technology-specific standards.

Zoning and spatial planning are both methods for guiding the distribution of people and activities in a space, and are regulatory restriction.

The processes through which enterprises can identify, prevent, mitigate and account for how they address their actual and potential adverse impacts. Due diligence is the idea that reasonable precautions should be taken to avoid causing harm to people, the environment, or society. It also involves identifying and mitigating risks before they occur.

An integrated system of hazard monitoring, forecasting and prediction, that enables individuals, communities, governments, businesses and others to take timely action to reduce disaster risks in advance of hazardous events.

A target to reduce the prevalence of a greenhouse gas over a specific time frame

A commitment to balance GHG emissions with removal by a certain point in time, effectively reducing the net emissions to zero

Aligning the skills of the workforce with the requirements of the just transition.

Either money or something of monetary value is transferred between two or more organisations, people or countries.

Conditions that enhance the feasibility of adaptation options. Enabling conditions include finance, technological innovation, strengthening policy instruments, institutional capacity, multi-level governance and changes in human behaviour and lifestyles.

Actions or measures to adapt terrestrial systems to climate change.

Actions or measures to adapt freshwater systems to climate change.

Actions to adapt human health, healthcare systems and well-being to climate change.

Actions to adapt and increase the resilience of rural and urban infrastructure and settlements to climate change.

Actions and measures to adapt and increase resilience of societies and the economy to climate change.

Actions or measures to adapt freshwater, coastal and marine systems to climate change.

Hot temperature extremes are daily maximum temperatures  that were exceeded on average once in a decade or once in 50 years, and includes heatwaves.

The release of heat-trapping gases, primarily from human activities such as burning fossil fuels, agriculture and industry.

A long-lived, colourless gas, chiefly emitted from fossil fuel combustion, deforestation and cement production.

A potent, short-lived greehouse gas, largely released from livestock, fossil fuel extraction and waste management.

Replacing technologies that burn fossil fuels directly with alternatives powered by electricity.

Actions to reduce emissions in energy generation and supply.

Investment in electricity transmission and distribution systems capable of integrating renewable energy, supporting electrification and strengthening energy system resilience.

Technologies that capture and hold energy in reserve for later use.

Risks to the ecosystem health of the marine environment, including ocean warming, ocean acidification, and ocean deoxygenation, harming biodiversity, species health, ecosystem services, and coastal community livelihoods.

Extreme weather refers to events where a weather variable exceeds (or falls below) a threshold. Meaning it is significantly different from the average or usual weather pattern.

A drought is an extended period of unusually dry weather marked by a significant and sustained lack of precipitation, falling below a specific threshold over a large area for more than a month

Terrestrial means "of the earth" and relates to the risks to ecological system that includes all living organisms and their interactions within land-based environments, such as forests, grasslands, and deserts.

Air pollution involves harmful contaminants in the air, affecting both indoor and outdoor environments. It can lead to health issues like respiratory diseases and heart problems, and climate impacts such as global warming. Pollutants can damage plants, trees, habitats, and water bodies like rivers and lakes.

Social protection systems consist of policies that help people manage social risks in order to prevent poverty and maintain decent incomes and living standards

Energy derived from biological compounds that are renewable due to their short life cycle within the carbon dioxide cycle.

Social inclusion is the process of improving the terms on which individuals and groups take part in society—improving the ability, opportunity, and dignity of those disadvantaged on the basis of their identity.

Heat extracted from the ground, usually in the form of hot water or steam and typically referred to as hydrothermal fluid.

Electrical energy generated from mechanical devices driven by flowing fresh water.

Production of electricity and heat from solar irradiation.

Kinetic energy of airflow transformed into useful energy, mostly electrical energy.

Oil is a combustible liquid fossil fuel composed mainly of hydrocarbons, occurring as crude oil and refined into petroleum products such as petrol, diesel and kerosene.

Fossil gas, commonly known as natural gas, is a fossil fuel consisting chiefly of methane with smaller amounts of other hydrocarbons and trace gases, found in underground deposits.

Coal is a combustible sedimentary rock formed from carbonised plant matter, rich in carbon and hydrocarbons, and occurring in several main types including hard coal and brown coal.

People with different national or cultural traditions from the dominant population

Social and cultural groups that share collective ancestral ties to the lands and natural resources where they live, occupy or from which they have been displaced

Work that is productive and delivers a fair income, security in the workplace and social protection for all, better prospects for personal development and social integration, freedom for people to express their concerns, organize and participate in the decisions that affect their lives and equality of opportunity.

People whose health, both mental and physical, makes them more vulnerable to the effects of climate change

Jobs that contribute to preserving or restoring the environment. We include jobs which require a high amount of green skills or which spend much of their time on green activities, as well as jobs transforming polluting industries.

People who have left their homes, whether through force, voluntarily, or a mixture of both

woman and genders outside of the gender binary

Any compulsory, unrequited payment to the government levied on corporations or individuals. This can be for environmental reasons, such as introducing a Carbon tax to set a price that emitters must pay for the greenhouse gases they emit.

Activities of industries that extract natural resources, such as mining, oil, and gas, for commercial use.

The activities of industries that transforms raw materials into finished goods through industrial processes.

The activities of industries involved in the production, distribution, and sale of energy, including electricity, gas, and renewables.

This sector involves managing waste treatment, sanitation, pollution control and environmental cleanup.

Activities that involve planning, designing and building infrastructure, residential, and commercial structures.

This sector involves the wholesale and retail selling of goods.

This sector involves activities to move goods and people, alongside the storage of products.

Activities that provide lodging, food, and entertainment services to guests, including hotels, restaurants, and resorts.

This sector creates and distributes information and entertainment through television, radio, print, and digital platforms.

This sector provides communication services, software development, and IT solutions.

This sector involves activities that impart knowledge and skills to individuals, including formal schooling, vocational training and educational support.

Activities of government agencies and institutions that provide public services, enforce laws and manage public resources.

This sector includes firms and individuals offering specialised expertise in fields such as law, accounting, consulting, science and engineering.

Activities of businesses and institutions that provide financial services and products to individuals and organisations.

Activities that involve the cultivation of crops and raising of livestock for food, fibre, and other products essential for human life and industry.

Activities that relate to the production of goods and services from forests.

Activities involving the catching, processing, and selling of fish for food, recreation, and industry.

This sector involves the distribution, treatment, and conservation of water resources.

This sector provides medical services, manufactures medical equipment, and develops pharmaceuticals to maintain and improve health.

Climate change can have a range of impacts on technological system. Extreme weather events can cause infrastructure failures like power outages or damage to roads and bridges, as well as the impacts from waste following natural disasters. Human activities also cause technological impacts, such as the risks posed by oil spillage and leaks.

Any substance with chemical properties that can cause physical harm to people or damage the environment, including ammonia, carbon monoxide, phosphine, chlorine, arsenic, cadmium, mercury, pesticides, dioxins, microplastics, benzene, asbestos, aflatoxins, fluoride, methanol, and toxins from marine sources.

Climate change impacts our society by disrupting the natural, economic and social systems we depend on. Physical hazards and underlying vulnerabilities can lead to increased resource competition for food and water, which can heighten the risk of conflict.

Slow onset events evolve gradually from incremental changes over many years or from increased frequency or intensity of recurring events. As defined in the Cancun Adaptation Framework (2010), slow onset events include risks and impacts from rising temperatures, desertification, biodiversity loss, land and forest degradation, glacial retreat, ocean acidification, sea level rise, and salinization.

Heavy precipitation refers to any form of weather where substances fall from the sky, including rain, snow, sleet, or hail.

The cryosphere is the frozen part of the Earth—it includes sea ice, glaciers, snow, and ice sheets. It helps regulate the climate and weather by reflecting sunlight. Rising temperatures are causing melting, leading to sea ice loss, glacier collapse, and glacier landslides and avalanches. This threatens the livelihoods of around 700 million people who rely on the cryosphere for food, water security, and cultural practices.

Environmental Groups Challenged Montana Agency’s Second Attempt at Environmental Review for Power Plant’s Air Permit

Target

Policy instrument

Risk

Impacted group

Just transition

Renewable energy

Fossil fuel

Greenhouse gas

Economic sector

Adaptation/resilience

Finance